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  <head>
    <meta charset="UTF-8" />
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    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
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  <body>
    <script>
      function Person(name) {
        this.name = name;
        console.log(this);
        return { name: name }; //返回对象
      }
      Person.prototype.name = 'Alice';
      var person1 = new Person('Bob');
      var person2 = Person('Alice');

      console.log(person1);
      console.log(person2);
    </script>
  </body>
</html>
